Texas Instruments

SN74AHC138N  

Encoders, Decoders, Multiplexers & Demultiplexers

SN74AHC138N Description

The SN74AHC138N is a high-performance decoder/demultiplexer IC designed by Texas Instruments, part of the 74AHC series. This device features a 1 x 3:8 decoding function, providing a versatile solution for various digital circuit applications. It operates on a single supply voltage ranging from 2V to 5.5V, making it suitable for a wide range of power supply configurations. The SN74AHC138N is housed in a through-hole package, specifically a 16-pin DIP (Dual In-line Package), which ensures robust mechanical stability and ease of integration into printed circuit boards.

SN74AHC138N Features

• High-Speed Operation: The SN74AHC138N offers high-speed performance, ensuring minimal propagation delay and fast signal processing. This makes it ideal for applications requiring rapid data handling and control.
• Wide Operating Voltage Range: With a supply voltage range of 2V to 5.5V, the SN74AHC138N can be used in diverse electronic systems without the need for complex power supply designs.
• Independent Circuits: The device features one independent 3:8 decoder/demultiplexer circuit, providing efficient signal routing and decoding capabilities.
• Robust Output Current: The SN74AHC138N can handle up to 8mA for both high and low output currents, ensuring reliable operation even under demanding conditions.
• Compliance and Safety: The SN74AHC138N is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. This makes it suitable for use in environmentally conscious applications.
• Moisture Sensitivity Level: The device has a moisture sensitivity level (MSL) of "Not Applicable," indicating it is not sensitive to moisture, which enhances its reliability in various environmental conditions.

SN74AHC138N Applications

The SN74AHC138N is highly versatile and finds applications in a variety of digital systems:

• Digital Systems: Ideal for use in microprocessor and microcontroller systems where efficient signal decoding and demultiplexing are required.
• Memory Management: Used in memory address decoding to manage and route data between different memory banks.
• Peripheral Control: Effective in controlling and interfacing with various peripheral devices, ensuring proper signal routing and control.
• Telecommunications: Utilized in telecommunication equipment for signal processing and control functions.
• Industrial Automation: Employed in industrial control systems for managing complex signal routing and decoding tasks.

Conclusion of SN74AHC138N

The SN74AHC138N from Texas Instruments is a reliable and efficient decoder/demultiplexer IC that offers high-speed operation, wide voltage range, and robust output capabilities. Its compliance with environmental and safety standards ensures it is suitable for a wide range of applications. The device's versatility and performance make it an excellent choice for digital systems, memory management, peripheral control, telecommunications, and industrial automation. The SN74AHC138N stands out as a high-quality solution for engineers and designers seeking a dependable and efficient decoding and demultiplexing component.

SN74AHC138N Documents

Download datasheets and manufacturer documentation for SN74AHC138N

Datasheets :

SN54/74AHC138      

HTML Datasheet :

SN54/74AHC138      

PCN Design/Specification :

Copper Bond Wire Revision A 04/Dec/2013       Material Set 30/Mar/2017